自应力钢管轻骨料砼的应力应变曲线分析

Analysis of stress strain curves on the self stress lightweight concrete filled steel tube

绘制不同含钢率下轴压短柱核心砼的σｃ－εｃ关系曲线，轴压短柱中截面的钢管的纵向应力和应变σｓｚ－εｓｚ关系曲线，同一强度等级、不同骨料的σｃ－εｃ关系曲线。

In this paper the central concrete′s stress strain curve with different steel rates,the middle cross section steel tube′s stress strain curve and the stress strain curve of different kinds of concrete with the same strength but different aggregates are drawn.The changing regulation of each curve is studied.